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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> *  Copyright 2001-2006 Stephen Colebourne</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> *  Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> *  you may not use this file except in compliance with the License.</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> *  You may obtain a copy of the License at</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *  Unless required by applicable law or agreed to in writing, software</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> *  distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> *  See the License for the specific language governing permissions and</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> *  limitations under the License.</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.goda.time;
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> java.io.Serializable;
<a name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.util.Locale;
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
<a name="24" href="#24">24</a>  
<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.goda.time.chrono.BaseChronology;
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.goda.time.chrono.ISOChronology;
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.goda.time.field.FieldUtils;
<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.goda.time.format.DateTimeFormat;
<a name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.goda.time.format.DateTimeFormatter;
<a name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.goda.time.format.DateTimeFormatterBuilder;
<a name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.goda.time.format.FormatUtils;
<a name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.goda.time.tz.DefaultNameProvider;
<a name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.goda.time.tz.FixedDateTimeZone;
<a name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.goda.time.tz.NameProvider;
<a name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.goda.time.tz.Provider;
<a name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.goda.time.tz.UTCProvider;
<a name="37" href="#37">37</a>  
<a name="38" href="#38">38</a>  <em class="jxr_javadoccomment">/**</em>
<a name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * DateTimeZone represents a time zone.</em>
<a name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * A time zone is a system of rules to convert time from one geographic </em>
<a name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * location to another. For example, Paris, France is one hour ahead of</em>
<a name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * London, England. Thus when it is 10:00 in London, it is 11:00 in Paris.</em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * All time zone rules are expressed, for historical reasons, relative to</em>
<a name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * Greenwich, London. Local time in Greenwich is referred to as Greenwich Mean</em>
<a name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * Time (GMT).  This is similar, but not precisely identical, to Universal </em>
<a name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * Coordinated Time, or UTC. This library only uses the term UTC.</em>
<a name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> * Using this system, America/Los_Angeles is expressed as UTC-08:00, or UTC-07:00</em>
<a name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * in the summer. The offset -08:00 indicates that America/Los_Angeles time is</em>
<a name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * obtained from UTC by adding -08:00, that is, by subtracting 8 hours.</em>
<a name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> * The offset differs in the summer because of daylight saving time, or DST.</em>
<a name="55" href="#55">55</a>  <em class="jxr_javadoccomment"> * The folowing definitions of time are generally used:</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment"> * &lt;ul&gt;</em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;UTC - The reference time.</em>
<a name="58" href="#58">58</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;Standard Time - The local time without a daylight saving time offset.</em>
<a name="59" href="#59">59</a>  <em class="jxr_javadoccomment"> * For example, in Paris, standard time is UTC+01:00.</em>
<a name="60" href="#60">60</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;Daylight Saving Time - The local time with a daylight saving time </em>
<a name="61" href="#61">61</a>  <em class="jxr_javadoccomment"> * offset. This offset is typically one hour, but not always. It is typically</em>
<a name="62" href="#62">62</a>  <em class="jxr_javadoccomment"> * used in most countries away from the equator.  In Paris, daylight saving </em>
<a name="63" href="#63">63</a>  <em class="jxr_javadoccomment"> * time is UTC+02:00.</em>
<a name="64" href="#64">64</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;Wall Time - This is what a local clock on the wall reads. This will be</em>
<a name="65" href="#65">65</a>  <em class="jxr_javadoccomment"> * either Standard Time or Daylight Saving Time depending on the time of year</em>
<a name="66" href="#66">66</a>  <em class="jxr_javadoccomment"> * and whether the location uses Daylight Saving Time.</em>
<a name="67" href="#67">67</a>  <em class="jxr_javadoccomment"> * &lt;/ul&gt;</em>
<a name="68" href="#68">68</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="69" href="#69">69</a>  <em class="jxr_javadoccomment"> * Unlike the Java TimeZone class, DateTimeZone is immutable. It also only</em>
<a name="70" href="#70">70</a>  <em class="jxr_javadoccomment"> * supports long format time zone ids. Thus EST and ECT are not accepted.</em>
<a name="71" href="#71">71</a>  <em class="jxr_javadoccomment"> * However, the factory that accepts a TimeZone will attempt to convert from</em>
<a name="72" href="#72">72</a>  <em class="jxr_javadoccomment"> * the old short id to a suitable long id.</em>
<a name="73" href="#73">73</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="74" href="#74">74</a>  <em class="jxr_javadoccomment"> * DateTimeZone is thread-safe and immutable, and all subclasses must be as</em>
<a name="75" href="#75">75</a>  <em class="jxr_javadoccomment"> * well.</em>
<a name="76" href="#76">76</a>  <em class="jxr_javadoccomment"> * </em>
<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment"> * @author Brian S O'Neill</em>
<a name="78" href="#78">78</a>  <em class="jxr_javadoccomment"> * @author Stephen Colebourne</em>
<a name="79" href="#79">79</a>  <em class="jxr_javadoccomment"> * @since 1.0</em>
<a name="80" href="#80">80</a>  <em class="jxr_javadoccomment"> */</em>
<a name="81" href="#81">81</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> implements Serializable {
<a name="82" href="#82">82</a>      
<a name="83" href="#83">83</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Serialization version. */</em>
<a name="84" href="#84">84</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 5546345482340108586L;
<a name="85" href="#85">85</a>  
<a name="86" href="#86">86</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The time zone for Universal Coordinated Time */</em>
<a name="87" href="#87">87</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> UTC = <strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/tz/FixedDateTimeZone.html">FixedDateTimeZone</a>(<span class="jxr_string">"UTC"</span>, <span class="jxr_string">"UTC"</span>, 0, 0);
<a name="88" href="#88">88</a>  
<a name="89" href="#89">89</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The instance that is providing time zones. */</em>
<a name="90" href="#90">90</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/tz/Provider.html">Provider</a> cProvider;
<a name="91" href="#91">91</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The instance that is providing time zone names. */</em>
<a name="92" href="#92">92</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/tz/NameProvider.html">NameProvider</a> cNameProvider;
<a name="93" href="#93">93</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The set of ID strings. */</em>
<a name="94" href="#94">94</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> Set cAvailableIDs;
<a name="95" href="#95">95</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The default time zone. */</em>
<a name="96" href="#96">96</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> cDefault;
<a name="97" href="#97">97</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> A formatter for printing and parsing zones. */</em>
<a name="98" href="#98">98</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/format/DateTimeFormatter.html">DateTimeFormatter</a> cOffsetFormatter;
<a name="99" href="#99">99</a>  
<a name="100" href="#100">100</a>     <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Cache that maps fixed offset strings to softly referenced DateTimeZones */</em>
<a name="101" href="#101">101</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> Map iFixedOffsetCache;
<a name="102" href="#102">102</a> 
<a name="103" href="#103">103</a>     <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Cache of old zone IDs to new zone IDs */</em>
<a name="104" href="#104">104</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> Map cZoneIdConversion;
<a name="105" href="#105">105</a> 
<a name="106" href="#106">106</a>     <strong class="jxr_keyword">static</strong> {
<a name="107" href="#107">107</a>         setProvider0(<strong class="jxr_keyword">null</strong>);
<a name="108" href="#108">108</a>         setNameProvider0(<strong class="jxr_keyword">null</strong>);
<a name="109" href="#109">109</a> 
<a name="110" href="#110">110</a>         <strong class="jxr_keyword">try</strong> {
<a name="111" href="#111">111</a> <em class="jxr_comment">//            try {</em>
<a name="112" href="#112">112</a> <em class="jxr_comment">//                cDefault = forID(System.getProperty("user.timezone"));</em>
<a name="113" href="#113">113</a> <em class="jxr_comment">//            } catch (RuntimeException ex) {</em>
<a name="114" href="#114">114</a> <em class="jxr_comment">//                // ignored</em>
<a name="115" href="#115">115</a> <em class="jxr_comment">//            }</em>
<a name="116" href="#116">116</a>             <strong class="jxr_keyword">if</strong> (cDefault == <strong class="jxr_keyword">null</strong>) {
<a name="117" href="#117">117</a>                 <em class="jxr_comment">///</em>
<a name="118" href="#118">118</a>                 cDefault = forTimeZone(
<a name="119" href="#119">119</a>                         com.google.gwt.i18n.client.DateTimeFormat
<a name="120" href="#120">120</a>                         .getFormat( <span class="jxr_string">"zzz"</span> )
<a name="121" href="#121">121</a>                         .format(<strong class="jxr_keyword">new</strong> Date()));
<a name="122" href="#122">122</a>             }
<a name="123" href="#123">123</a>         } <strong class="jxr_keyword">catch</strong> (IllegalArgumentException ex) {
<a name="124" href="#124">124</a>             <em class="jxr_comment">// ignored</em>
<a name="125" href="#125">125</a>         }
<a name="126" href="#126">126</a> 
<a name="127" href="#127">127</a>         <strong class="jxr_keyword">if</strong> (cDefault == <strong class="jxr_keyword">null</strong>) {
<a name="128" href="#128">128</a>             cDefault = UTC;
<a name="129" href="#129">129</a>         }
<a name="130" href="#130">130</a>     }
<a name="131" href="#131">131</a> 
<a name="132" href="#132">132</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="133" href="#133">133</a>     <em class="jxr_javadoccomment">/**</em>
<a name="134" href="#134">134</a> <em class="jxr_javadoccomment">     * Gets the default time zone.</em>
<a name="135" href="#135">135</a> <em class="jxr_javadoccomment">     * </em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * @return the default datetime zone object</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     */</em>
<a name="138" href="#138">138</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> getDefault() {
<a name="139" href="#139">139</a>         <strong class="jxr_keyword">return</strong> cDefault;
<a name="140" href="#140">140</a>     }
<a name="141" href="#141">141</a> 
<a name="142" href="#142">142</a>     <em class="jxr_javadoccomment">/**</em>
<a name="143" href="#143">143</a> <em class="jxr_javadoccomment">     * Sets the default time zone.</em>
<a name="144" href="#144">144</a> <em class="jxr_javadoccomment">     * </em>
<a name="145" href="#145">145</a> <em class="jxr_javadoccomment">     * @param zone  the default datetime zone object, must not be null</em>
<a name="146" href="#146">146</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the zone is null</em>
<a name="147" href="#147">147</a> <em class="jxr_javadoccomment">     * @throws SecurityException if the application has insufficient security rights</em>
<a name="148" href="#148">148</a> <em class="jxr_javadoccomment">     */</em>
<a name="149" href="#149">149</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setDefault(<a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> zone) { <em class="jxr_comment">//throws SecurityException {</em>
<a name="150" href="#150">150</a> <em class="jxr_comment">//        SecurityManager sm = System.getSecurityManager();</em>
<a name="151" href="#151">151</a> <em class="jxr_comment">//        if (sm != null) {</em>
<a name="152" href="#152">152</a> <em class="jxr_comment">//            sm.checkPermission(new JodaTimePermission("DateTimeZone.setDefault"));</em>
<a name="153" href="#153">153</a> <em class="jxr_comment">//        }</em>
<a name="154" href="#154">154</a> <em class="jxr_comment">//        if (zone == null) {</em>
<a name="155" href="#155">155</a> <em class="jxr_comment">//            throw new IllegalArgumentException("The datetime zone must not be null");</em>
<a name="156" href="#156">156</a> <em class="jxr_comment">//        }</em>
<a name="157" href="#157">157</a>         cDefault = zone;
<a name="158" href="#158">158</a>     }
<a name="159" href="#159">159</a> 
<a name="160" href="#160">160</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="161" href="#161">161</a>     <em class="jxr_javadoccomment">/**</em>
<a name="162" href="#162">162</a> <em class="jxr_javadoccomment">     * Gets a time zone instance for the specified time zone id.</em>
<a name="163" href="#163">163</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="164" href="#164">164</a> <em class="jxr_javadoccomment">     * The time zone id may be one of those returned by getAvailableIDs.</em>
<a name="165" href="#165">165</a> <em class="jxr_javadoccomment">     * Short ids, as accepted by {@link java.util.TimeZone}, are not accepted.</em>
<a name="166" href="#166">166</a> <em class="jxr_javadoccomment">     * All IDs must be specified in the long format.</em>
<a name="167" href="#167">167</a> <em class="jxr_javadoccomment">     * The exception is UTC, which is an acceptable id.</em>
<a name="168" href="#168">168</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="169" href="#169">169</a> <em class="jxr_javadoccomment">     * Alternatively a locale independent, fixed offset, datetime zone can</em>
<a name="170" href="#170">170</a> <em class="jxr_javadoccomment">     * be specified. The form &lt;code&gt;[+-]hh:mm&lt;/code&gt; can be used.</em>
<a name="171" href="#171">171</a> <em class="jxr_javadoccomment">     * </em>
<a name="172" href="#172">172</a> <em class="jxr_javadoccomment">     * @param id  the ID of the datetime zone, null means default</em>
<a name="173" href="#173">173</a> <em class="jxr_javadoccomment">     * @return the DateTimeZone object for the ID</em>
<a name="174" href="#174">174</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the ID is not recognised</em>
<a name="175" href="#175">175</a> <em class="jxr_javadoccomment">     */</em>
<a name="176" href="#176">176</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> forID(String id) {
<a name="177" href="#177">177</a>         <strong class="jxr_keyword">if</strong> (id == <strong class="jxr_keyword">null</strong>) {
<a name="178" href="#178">178</a>             <strong class="jxr_keyword">return</strong> getDefault();
<a name="179" href="#179">179</a>         }
<a name="180" href="#180">180</a>         <strong class="jxr_keyword">if</strong> (id.equals(<span class="jxr_string">"UTC"</span>)) {
<a name="181" href="#181">181</a>             <strong class="jxr_keyword">return</strong> DateTimeZone.UTC;
<a name="182" href="#182">182</a>         }
<a name="183" href="#183">183</a>         <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> zone = cProvider.getZone(id);
<a name="184" href="#184">184</a>         <strong class="jxr_keyword">if</strong> (zone != <strong class="jxr_keyword">null</strong>) {
<a name="185" href="#185">185</a>             <strong class="jxr_keyword">return</strong> zone;
<a name="186" href="#186">186</a>         }
<a name="187" href="#187">187</a>         <strong class="jxr_keyword">if</strong> (id.startsWith(<span class="jxr_string">"+"</span>) || id.startsWith(<span class="jxr_string">"-"</span>)) {
<a name="188" href="#188">188</a>             <strong class="jxr_keyword">int</strong> offset = parseOffset(id);
<a name="189" href="#189">189</a>             <strong class="jxr_keyword">if</strong> (offset == 0L) {
<a name="190" href="#190">190</a>                 <strong class="jxr_keyword">return</strong> DateTimeZone.UTC;
<a name="191" href="#191">191</a>             } <strong class="jxr_keyword">else</strong> {
<a name="192" href="#192">192</a>                 id = printOffset(offset);
<a name="193" href="#193">193</a>                 <strong class="jxr_keyword">return</strong> fixedOffsetZone(id, offset);
<a name="194" href="#194">194</a>             }
<a name="195" href="#195">195</a>         }
<a name="196" href="#196">196</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"The datetime zone id is not recognised: "</span> + id);
<a name="197" href="#197">197</a>     }
<a name="198" href="#198">198</a> 
<a name="199" href="#199">199</a>     <em class="jxr_javadoccomment">/**</em>
<a name="200" href="#200">200</a> <em class="jxr_javadoccomment">     * Gets a time zone instance for the specified offset to UTC in hours.</em>
<a name="201" href="#201">201</a> <em class="jxr_javadoccomment">     * This method assumes standard length hours.</em>
<a name="202" href="#202">202</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="203" href="#203">203</a> <em class="jxr_javadoccomment">     * This factory is a convenient way of constructing zones with a fixed offset.</em>
<a name="204" href="#204">204</a> <em class="jxr_javadoccomment">     * </em>
<a name="205" href="#205">205</a> <em class="jxr_javadoccomment">     * @param hoursOffset  the offset in hours from UTC</em>
<a name="206" href="#206">206</a> <em class="jxr_javadoccomment">     * @return the DateTimeZone object for the offset</em>
<a name="207" href="#207">207</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the offset is too large or too small</em>
<a name="208" href="#208">208</a> <em class="jxr_javadoccomment">     */</em>
<a name="209" href="#209">209</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> forOffsetHours(<strong class="jxr_keyword">int</strong> hoursOffset) <strong class="jxr_keyword">throws</strong> IllegalArgumentException {
<a name="210" href="#210">210</a>         <strong class="jxr_keyword">return</strong> forOffsetHoursMinutes(hoursOffset, 0);
<a name="211" href="#211">211</a>     }
<a name="212" href="#212">212</a> 
<a name="213" href="#213">213</a>     <em class="jxr_javadoccomment">/**</em>
<a name="214" href="#214">214</a> <em class="jxr_javadoccomment">     * Gets a time zone instance for the specified offset to UTC in hours and minutes.</em>
<a name="215" href="#215">215</a> <em class="jxr_javadoccomment">     * This method assumes 60 minutes in an hour, and standard length minutes.</em>
<a name="216" href="#216">216</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="217" href="#217">217</a> <em class="jxr_javadoccomment">     * This factory is a convenient way of constructing zones with a fixed offset.</em>
<a name="218" href="#218">218</a> <em class="jxr_javadoccomment">     * The minutes value is always positive and in the range 0 to 59.</em>
<a name="219" href="#219">219</a> <em class="jxr_javadoccomment">     * If constructed with the values (-2, 30), the resultiong zone is '-02:30'.</em>
<a name="220" href="#220">220</a> <em class="jxr_javadoccomment">     * </em>
<a name="221" href="#221">221</a> <em class="jxr_javadoccomment">     * @param hoursOffset  the offset in hours from UTC</em>
<a name="222" href="#222">222</a> <em class="jxr_javadoccomment">     * @param minutesOffset  the offset in minutes from UTC, must be between 0 and 59 inclusive</em>
<a name="223" href="#223">223</a> <em class="jxr_javadoccomment">     * @return the DateTimeZone object for the offset</em>
<a name="224" href="#224">224</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the offset or minute is too large or too small</em>
<a name="225" href="#225">225</a> <em class="jxr_javadoccomment">     */</em>
<a name="226" href="#226">226</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> forOffsetHoursMinutes(<strong class="jxr_keyword">int</strong> hoursOffset, <strong class="jxr_keyword">int</strong> minutesOffset) <strong class="jxr_keyword">throws</strong> IllegalArgumentException {
<a name="227" href="#227">227</a>         <strong class="jxr_keyword">if</strong> (hoursOffset == 0 &amp;&amp; minutesOffset == 0) {
<a name="228" href="#228">228</a>             <strong class="jxr_keyword">return</strong> DateTimeZone.UTC;
<a name="229" href="#229">229</a>         }
<a name="230" href="#230">230</a>         <strong class="jxr_keyword">if</strong> (minutesOffset &lt; 0 || minutesOffset &gt; 59) {
<a name="231" href="#231">231</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Minutes out of range: "</span> + minutesOffset);
<a name="232" href="#232">232</a>         }
<a name="233" href="#233">233</a>         <strong class="jxr_keyword">int</strong> offset = 0;
<a name="234" href="#234">234</a>         <strong class="jxr_keyword">try</strong> {
<a name="235" href="#235">235</a>             <strong class="jxr_keyword">int</strong> hoursInMinutes = FieldUtils.safeMultiply(hoursOffset, 60);
<a name="236" href="#236">236</a>             <strong class="jxr_keyword">if</strong> (hoursInMinutes &lt; 0) {
<a name="237" href="#237">237</a>                 minutesOffset = FieldUtils.safeAdd(hoursInMinutes, -minutesOffset);
<a name="238" href="#238">238</a>             } <strong class="jxr_keyword">else</strong> {
<a name="239" href="#239">239</a>                 minutesOffset = FieldUtils.safeAdd(hoursInMinutes, minutesOffset);
<a name="240" href="#240">240</a>             }
<a name="241" href="#241">241</a>             offset = FieldUtils.safeMultiply(minutesOffset, DateTimeConstants.MILLIS_PER_MINUTE);
<a name="242" href="#242">242</a>         } <strong class="jxr_keyword">catch</strong> (ArithmeticException ex) {
<a name="243" href="#243">243</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Offset is too large"</span>);
<a name="244" href="#244">244</a>         }
<a name="245" href="#245">245</a>         <strong class="jxr_keyword">return</strong> forOffsetMillis(offset);
<a name="246" href="#246">246</a>     }
<a name="247" href="#247">247</a> 
<a name="248" href="#248">248</a>     <em class="jxr_javadoccomment">/**</em>
<a name="249" href="#249">249</a> <em class="jxr_javadoccomment">     * Gets a time zone instance for the specified offset to UTC in milliseconds.</em>
<a name="250" href="#250">250</a> <em class="jxr_javadoccomment">     *</em>
<a name="251" href="#251">251</a> <em class="jxr_javadoccomment">     * @param millisOffset  the offset in millis from UTC</em>
<a name="252" href="#252">252</a> <em class="jxr_javadoccomment">     * @return the DateTimeZone object for the offset</em>
<a name="253" href="#253">253</a> <em class="jxr_javadoccomment">     */</em>
<a name="254" href="#254">254</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> forOffsetMillis(<strong class="jxr_keyword">int</strong> millisOffset) {
<a name="255" href="#255">255</a>         String id = printOffset(millisOffset);
<a name="256" href="#256">256</a>         <strong class="jxr_keyword">return</strong> fixedOffsetZone(id, millisOffset);
<a name="257" href="#257">257</a>     }
<a name="258" href="#258">258</a> 
<a name="259" href="#259">259</a>     <em class="jxr_javadoccomment">/**</em>
<a name="260" href="#260">260</a> <em class="jxr_javadoccomment">     * Gets a time zone instance for a JDK TimeZone.</em>
<a name="261" href="#261">261</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="262" href="#262">262</a> <em class="jxr_javadoccomment">     * DateTimeZone only accepts a subset of the IDs from TimeZone. The</em>
<a name="263" href="#263">263</a> <em class="jxr_javadoccomment">     * excluded IDs are the short three letter form (except UTC). This </em>
<a name="264" href="#264">264</a> <em class="jxr_javadoccomment">     * method will attempt to convert between time zones created using the</em>
<a name="265" href="#265">265</a> <em class="jxr_javadoccomment">     * short IDs and the full version.</em>
<a name="266" href="#266">266</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="267" href="#267">267</a> <em class="jxr_javadoccomment">     * This method is not designed to parse time zones with rules created by</em>
<a name="268" href="#268">268</a> <em class="jxr_javadoccomment">     * applications using &lt;code&gt;SimpleTimeZone&lt;/code&gt; directly.</em>
<a name="269" href="#269">269</a> <em class="jxr_javadoccomment">     * </em>
<a name="270" href="#270">270</a> <em class="jxr_javadoccomment">     * @param zone  the zone to convert, null means default</em>
<a name="271" href="#271">271</a> <em class="jxr_javadoccomment">     * @return the DateTimeZone object for the zone</em>
<a name="272" href="#272">272</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the zone is not recognised</em>
<a name="273" href="#273">273</a> <em class="jxr_javadoccomment">     */</em>
<a name="274" href="#274">274</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> forTimeZone(<strong class="jxr_keyword">final</strong> String id) {
<a name="275" href="#275">275</a>         
<a name="276" href="#276">276</a> <em class="jxr_comment">//        if (zone == null) {</em>
<a name="277" href="#277">277</a> <em class="jxr_comment">//            return getDefault();</em>
<a name="278" href="#278">278</a> <em class="jxr_comment">//        }</em>
<a name="279" href="#279">279</a> <em class="jxr_comment">//        final String id = zone.getID();</em>
<a name="280" href="#280">280</a>         <strong class="jxr_keyword">if</strong> (id.equals(<span class="jxr_string">"UTC"</span>)) {
<a name="281" href="#281">281</a>             <strong class="jxr_keyword">return</strong> DateTimeZone.UTC;
<a name="282" href="#282">282</a>         }
<a name="283" href="#283">283</a> 
<a name="284" href="#284">284</a>         <em class="jxr_comment">// Convert from old alias before consulting provider since they may differ.</em>
<a name="285" href="#285">285</a>         <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> dtz = <strong class="jxr_keyword">null</strong>;
<a name="286" href="#286">286</a>         String convId = getConvertedId(id);
<a name="287" href="#287">287</a>         <strong class="jxr_keyword">if</strong> (convId != <strong class="jxr_keyword">null</strong>) {
<a name="288" href="#288">288</a>             dtz = cProvider.getZone(convId);
<a name="289" href="#289">289</a>         }
<a name="290" href="#290">290</a>         <strong class="jxr_keyword">if</strong> (dtz == <strong class="jxr_keyword">null</strong>) {
<a name="291" href="#291">291</a>             dtz = cProvider.getZone(id);
<a name="292" href="#292">292</a>         }
<a name="293" href="#293">293</a>         <strong class="jxr_keyword">if</strong> (dtz != <strong class="jxr_keyword">null</strong>) {
<a name="294" href="#294">294</a>             <strong class="jxr_keyword">return</strong> dtz;
<a name="295" href="#295">295</a>         }
<a name="296" href="#296">296</a> 
<a name="297" href="#297">297</a>         <em class="jxr_comment">// Support GMT+/-hh:mm formats</em>
<a name="298" href="#298">298</a>         <strong class="jxr_keyword">if</strong> (convId == <strong class="jxr_keyword">null</strong>) {
<a name="299" href="#299">299</a>             convId = <span class="jxr_string">""</span>; <em class="jxr_comment">// TODO zone.getDisplayName();</em>
<a name="300" href="#300">300</a>             <strong class="jxr_keyword">if</strong> (convId.startsWith(<span class="jxr_string">"GMT+"</span>) || convId.startsWith(<span class="jxr_string">"GMT-"</span>)) {
<a name="301" href="#301">301</a>                 convId = convId.substring(3);
<a name="302" href="#302">302</a>                 <strong class="jxr_keyword">int</strong> offset = parseOffset(convId);
<a name="303" href="#303">303</a>                 <strong class="jxr_keyword">if</strong> (offset == 0L) {
<a name="304" href="#304">304</a>                     <strong class="jxr_keyword">return</strong> DateTimeZone.UTC;
<a name="305" href="#305">305</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="306" href="#306">306</a>                     convId = printOffset(offset);
<a name="307" href="#307">307</a>                     <strong class="jxr_keyword">return</strong> fixedOffsetZone(convId, offset);
<a name="308" href="#308">308</a>                 }
<a name="309" href="#309">309</a>             }
<a name="310" href="#310">310</a>         }
<a name="311" href="#311">311</a> 
<a name="312" href="#312">312</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"The datetime zone id is not recognised: "</span> + id);
<a name="313" href="#313">313</a>     }
<a name="314" href="#314">314</a> 
<a name="315" href="#315">315</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="316" href="#316">316</a>     <em class="jxr_javadoccomment">/**</em>
<a name="317" href="#317">317</a> <em class="jxr_javadoccomment">     * Gets the zone using a fixed offset amount.</em>
<a name="318" href="#318">318</a> <em class="jxr_javadoccomment">     * </em>
<a name="319" href="#319">319</a> <em class="jxr_javadoccomment">     * @param id  the zone id</em>
<a name="320" href="#320">320</a> <em class="jxr_javadoccomment">     * @param offset  the offset in millis</em>
<a name="321" href="#321">321</a> <em class="jxr_javadoccomment">     * @return the zone</em>
<a name="322" href="#322">322</a> <em class="jxr_javadoccomment">     */</em>
<a name="323" href="#323">323</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">synchronized</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> fixedOffsetZone(String id, <strong class="jxr_keyword">int</strong> offset) {
<a name="324" href="#324">324</a>         <strong class="jxr_keyword">if</strong> (offset == 0) {
<a name="325" href="#325">325</a>             <strong class="jxr_keyword">return</strong> DateTimeZone.UTC;
<a name="326" href="#326">326</a>         }
<a name="327" href="#327">327</a>         <strong class="jxr_keyword">if</strong> (iFixedOffsetCache == <strong class="jxr_keyword">null</strong>) {
<a name="328" href="#328">328</a>             iFixedOffsetCache = <strong class="jxr_keyword">new</strong> HashMap();
<a name="329" href="#329">329</a>         }
<a name="330" href="#330">330</a>         <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> zone = (DateTimeZone) iFixedOffsetCache.get(id);
<a name="331" href="#331">331</a>         <strong class="jxr_keyword">if</strong> (zone == <strong class="jxr_keyword">null</strong>) {
<a name="332" href="#332">332</a>             zone = <strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/tz/FixedDateTimeZone.html">FixedDateTimeZone</a>(id, <strong class="jxr_keyword">null</strong>, offset, offset);
<a name="333" href="#333">333</a>         }
<a name="334" href="#334">334</a>         
<a name="335" href="#335">335</a>         iFixedOffsetCache.put(id, zone);
<a name="336" href="#336">336</a>         <strong class="jxr_keyword">return</strong> zone;
<a name="337" href="#337">337</a>     }
<a name="338" href="#338">338</a> 
<a name="339" href="#339">339</a>     <em class="jxr_javadoccomment">/**</em>
<a name="340" href="#340">340</a> <em class="jxr_javadoccomment">     * Gets all the available IDs supported.</em>
<a name="341" href="#341">341</a> <em class="jxr_javadoccomment">     * </em>
<a name="342" href="#342">342</a> <em class="jxr_javadoccomment">     * @return an unmodifiable Set of String IDs</em>
<a name="343" href="#343">343</a> <em class="jxr_javadoccomment">     */</em>
<a name="344" href="#344">344</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Set getAvailableIDs() {
<a name="345" href="#345">345</a>         <strong class="jxr_keyword">return</strong> cAvailableIDs;
<a name="346" href="#346">346</a>     }
<a name="347" href="#347">347</a> 
<a name="348" href="#348">348</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="349" href="#349">349</a>     <em class="jxr_javadoccomment">/**</em>
<a name="350" href="#350">350</a> <em class="jxr_javadoccomment">     * Gets the zone provider factory.</em>
<a name="351" href="#351">351</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="352" href="#352">352</a> <em class="jxr_javadoccomment">     * The zone provider is a pluggable instance factory that supplies the</em>
<a name="353" href="#353">353</a> <em class="jxr_javadoccomment">     * actual instances of DateTimeZone.</em>
<a name="354" href="#354">354</a> <em class="jxr_javadoccomment">     * </em>
<a name="355" href="#355">355</a> <em class="jxr_javadoccomment">     * @return the provider</em>
<a name="356" href="#356">356</a> <em class="jxr_javadoccomment">     */</em>
<a name="357" href="#357">357</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/tz/Provider.html">Provider</a> getProvider() {
<a name="358" href="#358">358</a>         <strong class="jxr_keyword">return</strong> cProvider;
<a name="359" href="#359">359</a>     }
<a name="360" href="#360">360</a> 
<a name="361" href="#361">361</a>     <em class="jxr_javadoccomment">/**</em>
<a name="362" href="#362">362</a> <em class="jxr_javadoccomment">     * Sets the zone provider factory.</em>
<a name="363" href="#363">363</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="364" href="#364">364</a> <em class="jxr_javadoccomment">     * The zone provider is a pluggable instance factory that supplies the</em>
<a name="365" href="#365">365</a> <em class="jxr_javadoccomment">     * actual instances of DateTimeZone.</em>
<a name="366" href="#366">366</a> <em class="jxr_javadoccomment">     * </em>
<a name="367" href="#367">367</a> <em class="jxr_javadoccomment">     * @param provider  provider to use, or null for default</em>
<a name="368" href="#368">368</a> <em class="jxr_javadoccomment">     * @throws SecurityException if you do not have the permission DateTimeZone.setProvider</em>
<a name="369" href="#369">369</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the provider is invalid</em>
<a name="370" href="#370">370</a> <em class="jxr_javadoccomment">     */</em>
<a name="371" href="#371">371</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setProvider(<a href="../../../org/goda/time/tz/Provider.html">Provider</a> provider) { <em class="jxr_comment">//throws SecurityException {</em>
<a name="372" href="#372">372</a> <em class="jxr_comment">//        SecurityManager sm = System.getSecurityManager();</em>
<a name="373" href="#373">373</a> <em class="jxr_comment">//        if (sm != null) {</em>
<a name="374" href="#374">374</a> <em class="jxr_comment">//            sm.checkPermission(new JodaTimePermission("DateTimeZone.setProvider"));</em>
<a name="375" href="#375">375</a> <em class="jxr_comment">//        }</em>
<a name="376" href="#376">376</a>         setProvider0(provider);
<a name="377" href="#377">377</a>     }
<a name="378" href="#378">378</a> 
<a name="379" href="#379">379</a>     <em class="jxr_javadoccomment">/**</em>
<a name="380" href="#380">380</a> <em class="jxr_javadoccomment">     * Sets the zone provider factory without performing the security check.</em>
<a name="381" href="#381">381</a> <em class="jxr_javadoccomment">     * </em>
<a name="382" href="#382">382</a> <em class="jxr_javadoccomment">     * @param provider  provider to use, or null for default</em>
<a name="383" href="#383">383</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the provider is invalid</em>
<a name="384" href="#384">384</a> <em class="jxr_javadoccomment">     */</em>
<a name="385" href="#385">385</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setProvider0(<a href="../../../org/goda/time/tz/Provider.html">Provider</a> provider) {
<a name="386" href="#386">386</a>         <strong class="jxr_keyword">if</strong> (provider == <strong class="jxr_keyword">null</strong>) {
<a name="387" href="#387">387</a>             provider = getDefaultProvider();
<a name="388" href="#388">388</a>         }
<a name="389" href="#389">389</a>         Set ids = provider.getAvailableIDs();
<a name="390" href="#390">390</a>         <strong class="jxr_keyword">if</strong> (ids == <strong class="jxr_keyword">null</strong> || ids.size() == 0) {
<a name="391" href="#391">391</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException
<a name="392" href="#392">392</a>                 (<span class="jxr_string">"The provider doesn't have any available ids"</span>);
<a name="393" href="#393">393</a>         }
<a name="394" href="#394">394</a>         <strong class="jxr_keyword">if</strong> (!ids.contains(<span class="jxr_string">"UTC"</span>)) {
<a name="395" href="#395">395</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"The provider doesn't support UTC"</span>);
<a name="396" href="#396">396</a>         }
<a name="397" href="#397">397</a>         <strong class="jxr_keyword">if</strong> (!UTC.equals(provider.getZone(<span class="jxr_string">"UTC"</span>))) {
<a name="398" href="#398">398</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Invalid UTC zone provided"</span>);
<a name="399" href="#399">399</a>         }
<a name="400" href="#400">400</a>         cProvider = provider;
<a name="401" href="#401">401</a>         cAvailableIDs = ids;
<a name="402" href="#402">402</a>     }
<a name="403" href="#403">403</a> 
<a name="404" href="#404">404</a>     <em class="jxr_javadoccomment">/**</em>
<a name="405" href="#405">405</a> <em class="jxr_javadoccomment">     * Gets the default zone provider.</em>
<a name="406" href="#406">406</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="407" href="#407">407</a> <em class="jxr_javadoccomment">     * Tries the system property &lt;code&gt;org.joda.time.DateTimeZone.Provider&lt;/code&gt;.</em>
<a name="408" href="#408">408</a> <em class="jxr_javadoccomment">     * Then tries a &lt;code&gt;ZoneInfoProvider&lt;/code&gt; using the data in &lt;code&gt;org/joda/time/tz/data&lt;/code&gt;.</em>
<a name="409" href="#409">409</a> <em class="jxr_javadoccomment">     * Then uses &lt;code&gt;UTCProvider&lt;/code&gt;.</em>
<a name="410" href="#410">410</a> <em class="jxr_javadoccomment">     * </em>
<a name="411" href="#411">411</a> <em class="jxr_javadoccomment">     * @return the default name provider</em>
<a name="412" href="#412">412</a> <em class="jxr_javadoccomment">     */</em>
<a name="413" href="#413">413</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/tz/Provider.html">Provider</a> getDefaultProvider() {
<a name="414" href="#414">414</a>         <a href="../../../org/goda/time/tz/Provider.html">Provider</a> provider = <strong class="jxr_keyword">null</strong>;
<a name="415" href="#415">415</a> 
<a name="416" href="#416">416</a> <em class="jxr_comment">//        try {</em>
<a name="417" href="#417">417</a> <em class="jxr_comment">//            String providerClass =</em>
<a name="418" href="#418">418</a> <em class="jxr_comment">//                System.getProperty("org.joda.time.DateTimeZone.Provider");</em>
<a name="419" href="#419">419</a> <em class="jxr_comment">//            if (providerClass != null) {</em>
<a name="420" href="#420">420</a> <em class="jxr_comment">//                try {</em>
<a name="421" href="#421">421</a> <em class="jxr_comment">//                    provider = (Provider) Class.forName(providerClass).newInstance();</em>
<a name="422" href="#422">422</a> <em class="jxr_comment">//                } catch (Exception ex) {</em>
<a name="423" href="#423">423</a> <em class="jxr_comment">//                    Thread thread = Thread.currentThread();</em>
<a name="424" href="#424">424</a> <em class="jxr_comment">//                    thread.getThreadGroup().uncaughtException(thread, ex);</em>
<a name="425" href="#425">425</a> <em class="jxr_comment">//                }</em>
<a name="426" href="#426">426</a> <em class="jxr_comment">//            }</em>
<a name="427" href="#427">427</a> <em class="jxr_comment">//        } catch (SecurityException ex) {</em>
<a name="428" href="#428">428</a> <em class="jxr_comment">//            // ignored</em>
<a name="429" href="#429">429</a> <em class="jxr_comment">//        }</em>
<a name="430" href="#430">430</a> 
<a name="431" href="#431">431</a> <em class="jxr_comment">//        if (provider == null) {</em>
<a name="432" href="#432">432</a> <em class="jxr_comment">//            try {</em>
<a name="433" href="#433">433</a> <em class="jxr_comment">//                provider = new ZoneInfoProvider("org/joda/time/tz/data");</em>
<a name="434" href="#434">434</a> <em class="jxr_comment">//            } catch (Exception ex) {</em>
<a name="435" href="#435">435</a> <em class="jxr_comment">//                //Thread thread = Thread.currentThread();</em>
<a name="436" href="#436">436</a> <em class="jxr_comment">//               // thread.getThreadGroup().uncaughtException(thread, ex);</em>
<a name="437" href="#437">437</a> <em class="jxr_comment">//                throw new RuntimeException(ex);</em>
<a name="438" href="#438">438</a> <em class="jxr_comment">//            }</em>
<a name="439" href="#439">439</a> <em class="jxr_comment">//        }</em>
<a name="440" href="#440">440</a> 
<a name="441" href="#441">441</a>         <strong class="jxr_keyword">if</strong> (provider == <strong class="jxr_keyword">null</strong>) {
<a name="442" href="#442">442</a>             provider = <strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/tz/UTCProvider.html">UTCProvider</a>();
<a name="443" href="#443">443</a>         }
<a name="444" href="#444">444</a> 
<a name="445" href="#445">445</a>         <strong class="jxr_keyword">return</strong> provider;
<a name="446" href="#446">446</a>     }
<a name="447" href="#447">447</a> 
<a name="448" href="#448">448</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="449" href="#449">449</a>     <em class="jxr_javadoccomment">/**</em>
<a name="450" href="#450">450</a> <em class="jxr_javadoccomment">     * Gets the name provider factory.</em>
<a name="451" href="#451">451</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="452" href="#452">452</a> <em class="jxr_javadoccomment">     * The name provider is a pluggable instance factory that supplies the</em>
<a name="453" href="#453">453</a> <em class="jxr_javadoccomment">     * names of each DateTimeZone.</em>
<a name="454" href="#454">454</a> <em class="jxr_javadoccomment">     * </em>
<a name="455" href="#455">455</a> <em class="jxr_javadoccomment">     * @return the provider</em>
<a name="456" href="#456">456</a> <em class="jxr_javadoccomment">     */</em>
<a name="457" href="#457">457</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/tz/NameProvider.html">NameProvider</a> getNameProvider() {
<a name="458" href="#458">458</a>         <strong class="jxr_keyword">return</strong> cNameProvider;
<a name="459" href="#459">459</a>     }
<a name="460" href="#460">460</a> 
<a name="461" href="#461">461</a>     <em class="jxr_javadoccomment">/**</em>
<a name="462" href="#462">462</a> <em class="jxr_javadoccomment">     * Sets the name provider factory.</em>
<a name="463" href="#463">463</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="464" href="#464">464</a> <em class="jxr_javadoccomment">     * The name provider is a pluggable instance factory that supplies the</em>
<a name="465" href="#465">465</a> <em class="jxr_javadoccomment">     * names of each DateTimeZone.</em>
<a name="466" href="#466">466</a> <em class="jxr_javadoccomment">     * </em>
<a name="467" href="#467">467</a> <em class="jxr_javadoccomment">     * @param nameProvider  provider to use, or null for default</em>
<a name="468" href="#468">468</a> <em class="jxr_javadoccomment">     * @throws SecurityException if you do not have the permission DateTimeZone.setNameProvider</em>
<a name="469" href="#469">469</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the provider is invalid</em>
<a name="470" href="#470">470</a> <em class="jxr_javadoccomment">     */</em>
<a name="471" href="#471">471</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setNameProvider(<a href="../../../org/goda/time/tz/NameProvider.html">NameProvider</a> nameProvider) { <em class="jxr_comment">// throws SecurityException {</em>
<a name="472" href="#472">472</a> <em class="jxr_comment">//        SecurityManager sm = System.getSecurityManager();</em>
<a name="473" href="#473">473</a> <em class="jxr_comment">//        if (sm != null) {</em>
<a name="474" href="#474">474</a> <em class="jxr_comment">//            sm.checkPermission(new JodaTimePermission("DateTimeZone.setNameProvider"));</em>
<a name="475" href="#475">475</a> <em class="jxr_comment">//        }</em>
<a name="476" href="#476">476</a>         setNameProvider0(nameProvider);
<a name="477" href="#477">477</a>     }
<a name="478" href="#478">478</a> 
<a name="479" href="#479">479</a>     <em class="jxr_javadoccomment">/**</em>
<a name="480" href="#480">480</a> <em class="jxr_javadoccomment">     * Sets the name provider factory without performing the security check.</em>
<a name="481" href="#481">481</a> <em class="jxr_javadoccomment">     * </em>
<a name="482" href="#482">482</a> <em class="jxr_javadoccomment">     * @param nameProvider  provider to use, or null for default</em>
<a name="483" href="#483">483</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the provider is invalid</em>
<a name="484" href="#484">484</a> <em class="jxr_javadoccomment">     */</em>
<a name="485" href="#485">485</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setNameProvider0(<a href="../../../org/goda/time/tz/NameProvider.html">NameProvider</a> nameProvider) {
<a name="486" href="#486">486</a>         <strong class="jxr_keyword">if</strong> (nameProvider == <strong class="jxr_keyword">null</strong>) {
<a name="487" href="#487">487</a>             nameProvider = getDefaultNameProvider();
<a name="488" href="#488">488</a>         }
<a name="489" href="#489">489</a>         cNameProvider = nameProvider;
<a name="490" href="#490">490</a>     }
<a name="491" href="#491">491</a> 
<a name="492" href="#492">492</a>     <em class="jxr_javadoccomment">/**</em>
<a name="493" href="#493">493</a> <em class="jxr_javadoccomment">     * Gets the default name provider.</em>
<a name="494" href="#494">494</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="495" href="#495">495</a> <em class="jxr_javadoccomment">     * Tries the system property &lt;code&gt;org.joda.time.DateTimeZone.NameProvider&lt;/code&gt;.</em>
<a name="496" href="#496">496</a> <em class="jxr_javadoccomment">     * Then uses &lt;code&gt;DefaultNameProvider&lt;/code&gt;.</em>
<a name="497" href="#497">497</a> <em class="jxr_javadoccomment">     * </em>
<a name="498" href="#498">498</a> <em class="jxr_javadoccomment">     * @return the default name provider</em>
<a name="499" href="#499">499</a> <em class="jxr_javadoccomment">     */</em>
<a name="500" href="#500">500</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../org/goda/time/tz/NameProvider.html">NameProvider</a> getDefaultNameProvider() {
<a name="501" href="#501">501</a>         <a href="../../../org/goda/time/tz/NameProvider.html">NameProvider</a> nameProvider = <strong class="jxr_keyword">null</strong>;
<a name="502" href="#502">502</a> <em class="jxr_comment">//        try {</em>
<a name="503" href="#503">503</a> <em class="jxr_comment">//            String providerClass = System.getProperty("org.joda.time.DateTimeZone.NameProvider");</em>
<a name="504" href="#504">504</a> <em class="jxr_comment">//            if (providerClass != null) {</em>
<a name="505" href="#505">505</a> <em class="jxr_comment">//                try {</em>
<a name="506" href="#506">506</a> <em class="jxr_comment">//                    nameProvider = (NameProvider) Class.forName(providerClass).newInstance();</em>
<a name="507" href="#507">507</a> <em class="jxr_comment">//                } catch (Exception ex) {</em>
<a name="508" href="#508">508</a> <em class="jxr_comment">//                    Thread thread = Thread.currentThread();</em>
<a name="509" href="#509">509</a> <em class="jxr_comment">//                    thread.getThreadGroup().uncaughtException(thread, ex);</em>
<a name="510" href="#510">510</a> <em class="jxr_comment">//                }</em>
<a name="511" href="#511">511</a> <em class="jxr_comment">//            }</em>
<a name="512" href="#512">512</a> <em class="jxr_comment">//        } catch (SecurityException ex) {</em>
<a name="513" href="#513">513</a> <em class="jxr_comment">//            // ignore</em>
<a name="514" href="#514">514</a> <em class="jxr_comment">//        }</em>
<a name="515" href="#515">515</a> 
<a name="516" href="#516">516</a>         <strong class="jxr_keyword">if</strong> (nameProvider == <strong class="jxr_keyword">null</strong>) {
<a name="517" href="#517">517</a>             nameProvider = <strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/tz/DefaultNameProvider.html">DefaultNameProvider</a>();
<a name="518" href="#518">518</a>         }
<a name="519" href="#519">519</a> 
<a name="520" href="#520">520</a>         <strong class="jxr_keyword">return</strong> nameProvider;
<a name="521" href="#521">521</a>     }
<a name="522" href="#522">522</a> 
<a name="523" href="#523">523</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="524" href="#524">524</a>     <em class="jxr_javadoccomment">/**</em>
<a name="525" href="#525">525</a> <em class="jxr_javadoccomment">     * Converts an old style id to a new style id.</em>
<a name="526" href="#526">526</a> <em class="jxr_javadoccomment">     * </em>
<a name="527" href="#527">527</a> <em class="jxr_javadoccomment">     * @param id  the old style id</em>
<a name="528" href="#528">528</a> <em class="jxr_javadoccomment">     * @return the new style id, null if not found</em>
<a name="529" href="#529">529</a> <em class="jxr_javadoccomment">     */</em>
<a name="530" href="#530">530</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">synchronized</strong> String getConvertedId(String id) {
<a name="531" href="#531">531</a>         Map map = cZoneIdConversion;
<a name="532" href="#532">532</a>         <strong class="jxr_keyword">if</strong> (map == <strong class="jxr_keyword">null</strong>) {
<a name="533" href="#533">533</a>             <em class="jxr_comment">// Backwards compatibility with TimeZone.</em>
<a name="534" href="#534">534</a>             map = <strong class="jxr_keyword">new</strong> HashMap();
<a name="535" href="#535">535</a>             map.put(<span class="jxr_string">"GMT"</span>, <span class="jxr_string">"UTC"</span>);
<a name="536" href="#536">536</a>             map.put(<span class="jxr_string">"MIT"</span>, <span class="jxr_string">"Pacific/Apia"</span>);
<a name="537" href="#537">537</a>             map.put(<span class="jxr_string">"HST"</span>, <span class="jxr_string">"Pacific/Honolulu"</span>);
<a name="538" href="#538">538</a>             map.put(<span class="jxr_string">"AST"</span>, <span class="jxr_string">"America/Anchorage"</span>);
<a name="539" href="#539">539</a>             map.put(<span class="jxr_string">"PST"</span>, <span class="jxr_string">"America/Los_Angeles"</span>);
<a name="540" href="#540">540</a>             map.put(<span class="jxr_string">"MST"</span>, <span class="jxr_string">"America/Denver"</span>);
<a name="541" href="#541">541</a>             map.put(<span class="jxr_string">"PNT"</span>, <span class="jxr_string">"America/Phoenix"</span>);
<a name="542" href="#542">542</a>             map.put(<span class="jxr_string">"CST"</span>, <span class="jxr_string">"America/Chicago"</span>);
<a name="543" href="#543">543</a>             map.put(<span class="jxr_string">"EST"</span>, <span class="jxr_string">"America/New_York"</span>);
<a name="544" href="#544">544</a>             map.put(<span class="jxr_string">"IET"</span>, <span class="jxr_string">"America/Indianapolis"</span>);
<a name="545" href="#545">545</a>             map.put(<span class="jxr_string">"PRT"</span>, <span class="jxr_string">"America/Puerto_Rico"</span>);
<a name="546" href="#546">546</a>             map.put(<span class="jxr_string">"CNT"</span>, <span class="jxr_string">"America/St_Johns"</span>);
<a name="547" href="#547">547</a>             map.put(<span class="jxr_string">"AGT"</span>, <span class="jxr_string">"America/Buenos_Aires"</span>);
<a name="548" href="#548">548</a>             map.put(<span class="jxr_string">"BET"</span>, <span class="jxr_string">"America/Sao_Paulo"</span>);
<a name="549" href="#549">549</a>             map.put(<span class="jxr_string">"WET"</span>, <span class="jxr_string">"Europe/London"</span>);
<a name="550" href="#550">550</a>             map.put(<span class="jxr_string">"ECT"</span>, <span class="jxr_string">"Europe/Paris"</span>);
<a name="551" href="#551">551</a>             map.put(<span class="jxr_string">"ART"</span>, <span class="jxr_string">"Africa/Cairo"</span>);
<a name="552" href="#552">552</a>             map.put(<span class="jxr_string">"CAT"</span>, <span class="jxr_string">"Africa/Harare"</span>);
<a name="553" href="#553">553</a>             map.put(<span class="jxr_string">"EET"</span>, <span class="jxr_string">"Europe/Bucharest"</span>);
<a name="554" href="#554">554</a>             map.put(<span class="jxr_string">"EAT"</span>, <span class="jxr_string">"Africa/Addis_Ababa"</span>);
<a name="555" href="#555">555</a>             map.put(<span class="jxr_string">"MET"</span>, <span class="jxr_string">"Asia/Tehran"</span>);
<a name="556" href="#556">556</a>             map.put(<span class="jxr_string">"NET"</span>, <span class="jxr_string">"Asia/Yerevan"</span>);
<a name="557" href="#557">557</a>             map.put(<span class="jxr_string">"PLT"</span>, <span class="jxr_string">"Asia/Karachi"</span>);
<a name="558" href="#558">558</a>             map.put(<span class="jxr_string">"IST"</span>, <span class="jxr_string">"Asia/Calcutta"</span>);
<a name="559" href="#559">559</a>             map.put(<span class="jxr_string">"BST"</span>, <span class="jxr_string">"Asia/Dhaka"</span>);
<a name="560" href="#560">560</a>             map.put(<span class="jxr_string">"VST"</span>, <span class="jxr_string">"Asia/Saigon"</span>);
<a name="561" href="#561">561</a>             map.put(<span class="jxr_string">"CTT"</span>, <span class="jxr_string">"Asia/Shanghai"</span>);
<a name="562" href="#562">562</a>             map.put(<span class="jxr_string">"JST"</span>, <span class="jxr_string">"Asia/Tokyo"</span>);
<a name="563" href="#563">563</a>             map.put(<span class="jxr_string">"ACT"</span>, <span class="jxr_string">"Australia/Darwin"</span>);
<a name="564" href="#564">564</a>             map.put(<span class="jxr_string">"AET"</span>, <span class="jxr_string">"Australia/Sydney"</span>);
<a name="565" href="#565">565</a>             map.put(<span class="jxr_string">"SST"</span>, <span class="jxr_string">"Pacific/Guadalcanal"</span>);
<a name="566" href="#566">566</a>             map.put(<span class="jxr_string">"NST"</span>, <span class="jxr_string">"Pacific/Auckland"</span>);
<a name="567" href="#567">567</a>             cZoneIdConversion = map;
<a name="568" href="#568">568</a>         }
<a name="569" href="#569">569</a>         <strong class="jxr_keyword">return</strong> (String) map.get(id);
<a name="570" href="#570">570</a>     }
<a name="571" href="#571">571</a> 
<a name="572" href="#572">572</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> parseOffset(String str) {
<a name="573" href="#573">573</a>         <a href="../../../org/goda/time/Chronology.html">Chronology</a> chrono;
<a name="574" href="#574">574</a>         <strong class="jxr_keyword">if</strong> (cDefault != <strong class="jxr_keyword">null</strong>) {
<a name="575" href="#575">575</a>             chrono = ISOChronology.getInstanceUTC();
<a name="576" href="#576">576</a>         } <strong class="jxr_keyword">else</strong> {
<a name="577" href="#577">577</a>             <em class="jxr_comment">// Can't use a real chronology if called during class</em>
<a name="578" href="#578">578</a>             <em class="jxr_comment">// initialization. Offset parser doesn't need it anyhow.</em>
<a name="579" href="#579">579</a>             chrono = <strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/chrono/BaseChronology.html">BaseChronology</a>() {
<a name="580" href="#580">580</a>                 <strong class="jxr_keyword">public</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> getZone() {
<a name="581" href="#581">581</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="582" href="#582">582</a>                 }
<a name="583" href="#583">583</a>                 <strong class="jxr_keyword">public</strong> <a href="../../../org/goda/time/Chronology.html">Chronology</a> withUTC() {
<a name="584" href="#584">584</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="585" href="#585">585</a>                 }
<a name="586" href="#586">586</a>                 <strong class="jxr_keyword">public</strong> <a href="../../../org/goda/time/Chronology.html">Chronology</a> withZone(<a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> zone) {
<a name="587" href="#587">587</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a name="588" href="#588">588</a>                 }
<a name="589" href="#589">589</a>                 <strong class="jxr_keyword">public</strong> String toString() {
<a name="590" href="#590">590</a>                     <strong class="jxr_keyword">return</strong> getClass().getName();
<a name="591" href="#591">591</a>                 }
<a name="592" href="#592">592</a>             };
<a name="593" href="#593">593</a>         }
<a name="594" href="#594">594</a> 
<a name="595" href="#595">595</a>         <strong class="jxr_keyword">return</strong> -(<strong class="jxr_keyword">int</strong>) offsetFormatter().withChronology(chrono).parseMillis(str);
<a name="596" href="#596">596</a>     }
<a name="597" href="#597">597</a> 
<a name="598" href="#598">598</a>     <em class="jxr_javadoccomment">/**</em>
<a name="599" href="#599">599</a> <em class="jxr_javadoccomment">     * Formats a timezone offset string.</em>
<a name="600" href="#600">600</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="601" href="#601">601</a> <em class="jxr_javadoccomment">     * This method is kept separate from the formatting classes to speed and</em>
<a name="602" href="#602">602</a> <em class="jxr_javadoccomment">     * simplify startup and classloading.</em>
<a name="603" href="#603">603</a> <em class="jxr_javadoccomment">     * </em>
<a name="604" href="#604">604</a> <em class="jxr_javadoccomment">     * @param offset  the offset in milliseconds</em>
<a name="605" href="#605">605</a> <em class="jxr_javadoccomment">     * @return the time zone string</em>
<a name="606" href="#606">606</a> <em class="jxr_javadoccomment">     */</em>
<a name="607" href="#607">607</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String printOffset(<strong class="jxr_keyword">int</strong> offset) {
<a name="608" href="#608">608</a>         StringBuffer buf = <strong class="jxr_keyword">new</strong> StringBuffer();
<a name="609" href="#609">609</a>         <strong class="jxr_keyword">if</strong> (offset &gt;= 0) {
<a name="610" href="#610">610</a>             buf.append('+');
<a name="611" href="#611">611</a>         } <strong class="jxr_keyword">else</strong> {
<a name="612" href="#612">612</a>             buf.append('-');
<a name="613" href="#613">613</a>             offset = -offset;
<a name="614" href="#614">614</a>         }
<a name="615" href="#615">615</a> 
<a name="616" href="#616">616</a>         <strong class="jxr_keyword">int</strong> hours = offset / DateTimeConstants.MILLIS_PER_HOUR;
<a name="617" href="#617">617</a>         FormatUtils.appendPaddedInteger(buf, hours, 2);
<a name="618" href="#618">618</a>         offset -= hours * (<strong class="jxr_keyword">int</strong>) DateTimeConstants.MILLIS_PER_HOUR;
<a name="619" href="#619">619</a> 
<a name="620" href="#620">620</a>         <strong class="jxr_keyword">int</strong> minutes = offset / DateTimeConstants.MILLIS_PER_MINUTE;
<a name="621" href="#621">621</a>         buf.append(':');
<a name="622" href="#622">622</a>         FormatUtils.appendPaddedInteger(buf, minutes, 2);
<a name="623" href="#623">623</a>         offset -= minutes * DateTimeConstants.MILLIS_PER_MINUTE;
<a name="624" href="#624">624</a>         <strong class="jxr_keyword">if</strong> (offset == 0) {
<a name="625" href="#625">625</a>             <strong class="jxr_keyword">return</strong> buf.toString();
<a name="626" href="#626">626</a>         }
<a name="627" href="#627">627</a> 
<a name="628" href="#628">628</a>         <strong class="jxr_keyword">int</strong> seconds = offset / DateTimeConstants.MILLIS_PER_SECOND;
<a name="629" href="#629">629</a>         buf.append(':');
<a name="630" href="#630">630</a>         FormatUtils.appendPaddedInteger(buf, seconds, 2);
<a name="631" href="#631">631</a>         offset -= seconds * DateTimeConstants.MILLIS_PER_SECOND;
<a name="632" href="#632">632</a>         <strong class="jxr_keyword">if</strong> (offset == 0) {
<a name="633" href="#633">633</a>             <strong class="jxr_keyword">return</strong> buf.toString();
<a name="634" href="#634">634</a>         }
<a name="635" href="#635">635</a> 
<a name="636" href="#636">636</a>         buf.append('.');
<a name="637" href="#637">637</a>         FormatUtils.appendPaddedInteger(buf, offset, 3);
<a name="638" href="#638">638</a>         <strong class="jxr_keyword">return</strong> buf.toString();
<a name="639" href="#639">639</a>     }
<a name="640" href="#640">640</a> 
<a name="641" href="#641">641</a>     <em class="jxr_javadoccomment">/**</em>
<a name="642" href="#642">642</a> <em class="jxr_javadoccomment">     * Gets a printer/parser for managing the offset id formatting.</em>
<a name="643" href="#643">643</a> <em class="jxr_javadoccomment">     * </em>
<a name="644" href="#644">644</a> <em class="jxr_javadoccomment">     * @return the formatter</em>
<a name="645" href="#645">645</a> <em class="jxr_javadoccomment">     */</em>
<a name="646" href="#646">646</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">synchronized</strong> <a href="../../../org/goda/time/format/DateTimeFormatter.html">DateTimeFormatter</a> offsetFormatter() {
<a name="647" href="#647">647</a>         <strong class="jxr_keyword">if</strong> (cOffsetFormatter == <strong class="jxr_keyword">null</strong>) {
<a name="648" href="#648">648</a>             cOffsetFormatter = <strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/format/DateTimeFormatterBuilder.html">DateTimeFormatterBuilder</a>()
<a name="649" href="#649">649</a>                 .appendTimeZoneOffset(<strong class="jxr_keyword">null</strong>, <strong class="jxr_keyword">true</strong>, 2, 4)
<a name="650" href="#650">650</a>                 .toFormatter();
<a name="651" href="#651">651</a>         }
<a name="652" href="#652">652</a>         <strong class="jxr_keyword">return</strong> cOffsetFormatter;
<a name="653" href="#653">653</a>     }
<a name="654" href="#654">654</a> 
<a name="655" href="#655">655</a>     <em class="jxr_comment">// Instance fields and methods</em>
<a name="656" href="#656">656</a>     <em class="jxr_comment">//--------------------------------------------------------------------</em>
<a name="657" href="#657">657</a> 
<a name="658" href="#658">658</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String iID;
<a name="659" href="#659">659</a> 
<a name="660" href="#660">660</a>     <em class="jxr_javadoccomment">/**</em>
<a name="661" href="#661">661</a> <em class="jxr_javadoccomment">     * Constructor.</em>
<a name="662" href="#662">662</a> <em class="jxr_javadoccomment">     * </em>
<a name="663" href="#663">663</a> <em class="jxr_javadoccomment">     * @param id  the id to use</em>
<a name="664" href="#664">664</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the id is null</em>
<a name="665" href="#665">665</a> <em class="jxr_javadoccomment">     */</em>
<a name="666" href="#666">666</a>     <strong class="jxr_keyword">protected</strong> <a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a>(String id) {
<a name="667" href="#667">667</a>         <strong class="jxr_keyword">if</strong> (id == <strong class="jxr_keyword">null</strong>) {
<a name="668" href="#668">668</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Id must not be null"</span>);
<a name="669" href="#669">669</a>         }
<a name="670" href="#670">670</a>         iID = id;
<a name="671" href="#671">671</a>     }
<a name="672" href="#672">672</a> 
<a name="673" href="#673">673</a>     <em class="jxr_comment">// Principal methods</em>
<a name="674" href="#674">674</a>     <em class="jxr_comment">//--------------------------------------------------------------------</em>
<a name="675" href="#675">675</a> 
<a name="676" href="#676">676</a>     <em class="jxr_javadoccomment">/**</em>
<a name="677" href="#677">677</a> <em class="jxr_javadoccomment">     * Gets the ID of this datetime zone.</em>
<a name="678" href="#678">678</a> <em class="jxr_javadoccomment">     * </em>
<a name="679" href="#679">679</a> <em class="jxr_javadoccomment">     * @return the ID of this datetime zone</em>
<a name="680" href="#680">680</a> <em class="jxr_javadoccomment">     */</em>
<a name="681" href="#681">681</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> String getID() {
<a name="682" href="#682">682</a>         <strong class="jxr_keyword">return</strong> iID;
<a name="683" href="#683">683</a>     }
<a name="684" href="#684">684</a> 
<a name="685" href="#685">685</a>     <em class="jxr_javadoccomment">/**</em>
<a name="686" href="#686">686</a> <em class="jxr_javadoccomment">     * Returns a non-localized name that is unique to this time zone. It can be</em>
<a name="687" href="#687">687</a> <em class="jxr_javadoccomment">     * combined with id to form a unique key for fetching localized names.</em>
<a name="688" href="#688">688</a> <em class="jxr_javadoccomment">     *</em>
<a name="689" href="#689">689</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the name for</em>
<a name="690" href="#690">690</a> <em class="jxr_javadoccomment">     * @return name key or null if id should be used for names</em>
<a name="691" href="#691">691</a> <em class="jxr_javadoccomment">     */</em>
<a name="692" href="#692">692</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> String getNameKey(<strong class="jxr_keyword">long</strong> instant);
<a name="693" href="#693">693</a> 
<a name="694" href="#694">694</a>     <em class="jxr_javadoccomment">/**</em>
<a name="695" href="#695">695</a> <em class="jxr_javadoccomment">     * Gets the short name of this datetime zone suitable for display using</em>
<a name="696" href="#696">696</a> <em class="jxr_javadoccomment">     * the default locale.</em>
<a name="697" href="#697">697</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="698" href="#698">698</a> <em class="jxr_javadoccomment">     * If the name is not available for the locale, then this method returns a</em>
<a name="699" href="#699">699</a> <em class="jxr_javadoccomment">     * string in the format &lt;code&gt;[+-]hh:mm&lt;/code&gt;.</em>
<a name="700" href="#700">700</a> <em class="jxr_javadoccomment">     * </em>
<a name="701" href="#701">701</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the name for</em>
<a name="702" href="#702">702</a> <em class="jxr_javadoccomment">     * @return the human-readable short name in the default locale</em>
<a name="703" href="#703">703</a> <em class="jxr_javadoccomment">     */</em>
<a name="704" href="#704">704</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> String getShortName(<strong class="jxr_keyword">long</strong> instant) {
<a name="705" href="#705">705</a>         <strong class="jxr_keyword">return</strong> getShortName(instant, <strong class="jxr_keyword">null</strong>);
<a name="706" href="#706">706</a>     }
<a name="707" href="#707">707</a> 
<a name="708" href="#708">708</a>     <em class="jxr_javadoccomment">/**</em>
<a name="709" href="#709">709</a> <em class="jxr_javadoccomment">     * Gets the short name of this datetime zone suitable for display using</em>
<a name="710" href="#710">710</a> <em class="jxr_javadoccomment">     * the specified locale.</em>
<a name="711" href="#711">711</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="712" href="#712">712</a> <em class="jxr_javadoccomment">     * If the name is not available for the locale, then this method returns a</em>
<a name="713" href="#713">713</a> <em class="jxr_javadoccomment">     * string in the format &lt;code&gt;[+-]hh:mm&lt;/code&gt;.</em>
<a name="714" href="#714">714</a> <em class="jxr_javadoccomment">     * </em>
<a name="715" href="#715">715</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the name for</em>
<a name="716" href="#716">716</a> <em class="jxr_javadoccomment">     * @param locale  the locale to get the name for</em>
<a name="717" href="#717">717</a> <em class="jxr_javadoccomment">     * @return the human-readable short name in the specified locale</em>
<a name="718" href="#718">718</a> <em class="jxr_javadoccomment">     */</em>
<a name="719" href="#719">719</a>     <strong class="jxr_keyword">public</strong> String getShortName(<strong class="jxr_keyword">long</strong> instant, <a href="../../../java/util/Locale.html">Locale</a> locale) {
<a name="720" href="#720">720</a>         <strong class="jxr_keyword">if</strong> (locale == <strong class="jxr_keyword">null</strong>) {
<a name="721" href="#721">721</a>             locale = Locale.getDefault();
<a name="722" href="#722">722</a>         }
<a name="723" href="#723">723</a>         String nameKey = getNameKey(instant);
<a name="724" href="#724">724</a>         <strong class="jxr_keyword">if</strong> (nameKey == <strong class="jxr_keyword">null</strong>) {
<a name="725" href="#725">725</a>             <strong class="jxr_keyword">return</strong> iID;
<a name="726" href="#726">726</a>         }
<a name="727" href="#727">727</a>         String name = cNameProvider.getShortName(locale, iID, nameKey);
<a name="728" href="#728">728</a>         <strong class="jxr_keyword">if</strong> (name != <strong class="jxr_keyword">null</strong>) {
<a name="729" href="#729">729</a>             <strong class="jxr_keyword">return</strong> name;
<a name="730" href="#730">730</a>         }
<a name="731" href="#731">731</a>         <strong class="jxr_keyword">return</strong> printOffset(getOffset(instant));
<a name="732" href="#732">732</a>     }
<a name="733" href="#733">733</a> 
<a name="734" href="#734">734</a>     <em class="jxr_javadoccomment">/**</em>
<a name="735" href="#735">735</a> <em class="jxr_javadoccomment">     * Gets the long name of this datetime zone suitable for display using</em>
<a name="736" href="#736">736</a> <em class="jxr_javadoccomment">     * the default locale.</em>
<a name="737" href="#737">737</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="738" href="#738">738</a> <em class="jxr_javadoccomment">     * If the name is not available for the locale, then this method returns a</em>
<a name="739" href="#739">739</a> <em class="jxr_javadoccomment">     * string in the format &lt;code&gt;[+-]hh:mm&lt;/code&gt;.</em>
<a name="740" href="#740">740</a> <em class="jxr_javadoccomment">     * </em>
<a name="741" href="#741">741</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the name for</em>
<a name="742" href="#742">742</a> <em class="jxr_javadoccomment">     * @return the human-readable long name in the default locale</em>
<a name="743" href="#743">743</a> <em class="jxr_javadoccomment">     */</em>
<a name="744" href="#744">744</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> String getName(<strong class="jxr_keyword">long</strong> instant) {
<a name="745" href="#745">745</a>         <strong class="jxr_keyword">return</strong> getName(instant, <strong class="jxr_keyword">null</strong>);
<a name="746" href="#746">746</a>     }
<a name="747" href="#747">747</a> 
<a name="748" href="#748">748</a>     <em class="jxr_javadoccomment">/**</em>
<a name="749" href="#749">749</a> <em class="jxr_javadoccomment">     * Gets the long name of this datetime zone suitable for display using</em>
<a name="750" href="#750">750</a> <em class="jxr_javadoccomment">     * the specified locale.</em>
<a name="751" href="#751">751</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="752" href="#752">752</a> <em class="jxr_javadoccomment">     * If the name is not available for the locale, then this method returns a</em>
<a name="753" href="#753">753</a> <em class="jxr_javadoccomment">     * string in the format &lt;code&gt;[+-]hh:mm&lt;/code&gt;.</em>
<a name="754" href="#754">754</a> <em class="jxr_javadoccomment">     * </em>
<a name="755" href="#755">755</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the name for</em>
<a name="756" href="#756">756</a> <em class="jxr_javadoccomment">     * @param locale  the locale to get the name for</em>
<a name="757" href="#757">757</a> <em class="jxr_javadoccomment">     * @return the human-readable long name in the specified locale</em>
<a name="758" href="#758">758</a> <em class="jxr_javadoccomment">     */</em>
<a name="759" href="#759">759</a>     <strong class="jxr_keyword">public</strong> String getName(<strong class="jxr_keyword">long</strong> instant, <a href="../../../java/util/Locale.html">Locale</a> locale) {
<a name="760" href="#760">760</a>         <strong class="jxr_keyword">if</strong> (locale == <strong class="jxr_keyword">null</strong>) {
<a name="761" href="#761">761</a>             locale = Locale.getDefault();
<a name="762" href="#762">762</a>         }
<a name="763" href="#763">763</a>         String nameKey = getNameKey(instant);
<a name="764" href="#764">764</a>         <strong class="jxr_keyword">if</strong> (nameKey == <strong class="jxr_keyword">null</strong>) {
<a name="765" href="#765">765</a>             <strong class="jxr_keyword">return</strong> iID;
<a name="766" href="#766">766</a>         }
<a name="767" href="#767">767</a>         String name = cNameProvider.getName(locale, iID, nameKey);
<a name="768" href="#768">768</a>         <strong class="jxr_keyword">if</strong> (name != <strong class="jxr_keyword">null</strong>) {
<a name="769" href="#769">769</a>             <strong class="jxr_keyword">return</strong> name;
<a name="770" href="#770">770</a>         }
<a name="771" href="#771">771</a>         <strong class="jxr_keyword">return</strong> printOffset(getOffset(instant));
<a name="772" href="#772">772</a>     }
<a name="773" href="#773">773</a> 
<a name="774" href="#774">774</a>     <em class="jxr_javadoccomment">/**</em>
<a name="775" href="#775">775</a> <em class="jxr_javadoccomment">     * Gets the millisecond offset to add to UTC to get local time.</em>
<a name="776" href="#776">776</a> <em class="jxr_javadoccomment">     * </em>
<a name="777" href="#777">777</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the offset for</em>
<a name="778" href="#778">778</a> <em class="jxr_javadoccomment">     * @return the millisecond offset to add to UTC to get local time</em>
<a name="779" href="#779">779</a> <em class="jxr_javadoccomment">     */</em>
<a name="780" href="#780">780</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">int</strong> getOffset(<strong class="jxr_keyword">long</strong> instant);
<a name="781" href="#781">781</a> 
<a name="782" href="#782">782</a>     <em class="jxr_javadoccomment">/**</em>
<a name="783" href="#783">783</a> <em class="jxr_javadoccomment">     * Gets the millisecond offset to add to UTC to get local time.</em>
<a name="784" href="#784">784</a> <em class="jxr_javadoccomment">     * </em>
<a name="785" href="#785">785</a> <em class="jxr_javadoccomment">     * @param instant  instant to get the offset for, null means now</em>
<a name="786" href="#786">786</a> <em class="jxr_javadoccomment">     * @return the millisecond offset to add to UTC to get local time</em>
<a name="787" href="#787">787</a> <em class="jxr_javadoccomment">     */</em>
<a name="788" href="#788">788</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> getOffset(<a href="../../../org/goda/time/ReadableInstant.html">ReadableInstant</a> instant) {
<a name="789" href="#789">789</a>         <strong class="jxr_keyword">if</strong> (instant == <strong class="jxr_keyword">null</strong>) {
<a name="790" href="#790">790</a>             <strong class="jxr_keyword">return</strong> getOffset(DateTimeUtils.currentTimeMillis());
<a name="791" href="#791">791</a>         }
<a name="792" href="#792">792</a>         <strong class="jxr_keyword">return</strong> getOffset(instant.getMillis());
<a name="793" href="#793">793</a>     }
<a name="794" href="#794">794</a> 
<a name="795" href="#795">795</a>     <em class="jxr_javadoccomment">/**</em>
<a name="796" href="#796">796</a> <em class="jxr_javadoccomment">     * Gets the standard millisecond offset to add to UTC to get local time,</em>
<a name="797" href="#797">797</a> <em class="jxr_javadoccomment">     * when standard time is in effect.</em>
<a name="798" href="#798">798</a> <em class="jxr_javadoccomment">     * </em>
<a name="799" href="#799">799</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the offset for</em>
<a name="800" href="#800">800</a> <em class="jxr_javadoccomment">     * @return the millisecond offset to add to UTC to get local time</em>
<a name="801" href="#801">801</a> <em class="jxr_javadoccomment">     */</em>
<a name="802" href="#802">802</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">int</strong> getStandardOffset(<strong class="jxr_keyword">long</strong> instant);
<a name="803" href="#803">803</a> 
<a name="804" href="#804">804</a>     <em class="jxr_javadoccomment">/**</em>
<a name="805" href="#805">805</a> <em class="jxr_javadoccomment">     * Checks whether, at a particular instant, the offset is standard or not.</em>
<a name="806" href="#806">806</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="807" href="#807">807</a> <em class="jxr_javadoccomment">     * This method can be used to determine whether Summer Time (DST) applies.</em>
<a name="808" href="#808">808</a> <em class="jxr_javadoccomment">     * As a general rule, if the offset at the specified instant is standard,</em>
<a name="809" href="#809">809</a> <em class="jxr_javadoccomment">     * then either Winter time applies, or there is no Summer Time. If the</em>
<a name="810" href="#810">810</a> <em class="jxr_javadoccomment">     * instant is not standard, then Summer Time applies.</em>
<a name="811" href="#811">811</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="812" href="#812">812</a> <em class="jxr_javadoccomment">     * The implementation of the method is simply whether {@link #getOffset(long)}</em>
<a name="813" href="#813">813</a> <em class="jxr_javadoccomment">     * equals {@link #getStandardOffset(long)} at the specified instant.</em>
<a name="814" href="#814">814</a> <em class="jxr_javadoccomment">     * </em>
<a name="815" href="#815">815</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z to get the offset for</em>
<a name="816" href="#816">816</a> <em class="jxr_javadoccomment">     * @return true if the offset at the given instant is the standard offset</em>
<a name="817" href="#817">817</a> <em class="jxr_javadoccomment">     * @since 1.5</em>
<a name="818" href="#818">818</a> <em class="jxr_javadoccomment">     */</em>
<a name="819" href="#819">819</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isStandardOffset(<strong class="jxr_keyword">long</strong> instant) {
<a name="820" href="#820">820</a>         <strong class="jxr_keyword">return</strong> getOffset(instant) == getStandardOffset(instant);
<a name="821" href="#821">821</a>     }
<a name="822" href="#822">822</a> 
<a name="823" href="#823">823</a>     <em class="jxr_javadoccomment">/**</em>
<a name="824" href="#824">824</a> <em class="jxr_javadoccomment">     * Gets the millisecond offset to subtract from local time to get UTC time.</em>
<a name="825" href="#825">825</a> <em class="jxr_javadoccomment">     * This offset can be used to undo adding the offset obtained by getOffset.</em>
<a name="826" href="#826">826</a> <em class="jxr_javadoccomment">     *</em>
<a name="827" href="#827">827</a> <em class="jxr_javadoccomment">     * &lt;pre&gt;</em>
<a name="828" href="#828">828</a> <em class="jxr_javadoccomment">     * millisLocal == millisUTC   + getOffset(millisUTC)</em>
<a name="829" href="#829">829</a> <em class="jxr_javadoccomment">     * millisUTC   == millisLocal - getOffsetFromLocal(millisLocal)</em>
<a name="830" href="#830">830</a> <em class="jxr_javadoccomment">     * &lt;/pre&gt;</em>
<a name="831" href="#831">831</a> <em class="jxr_javadoccomment">     *</em>
<a name="832" href="#832">832</a> <em class="jxr_javadoccomment">     * NOTE: After calculating millisLocal, some error may be introduced. At</em>
<a name="833" href="#833">833</a> <em class="jxr_javadoccomment">     * offset transitions (due to DST or other historical changes), ranges of</em>
<a name="834" href="#834">834</a> <em class="jxr_javadoccomment">     * local times may map to different UTC times.</em>
<a name="835" href="#835">835</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="836" href="#836">836</a> <em class="jxr_javadoccomment">     * This method will return an offset suitable for calculating an instant</em>
<a name="837" href="#837">837</a> <em class="jxr_javadoccomment">     * after any DST gap. For example, consider a zone with a cutover</em>
<a name="838" href="#838">838</a> <em class="jxr_javadoccomment">     * from 01:00 to 01:59:&lt;br /&gt;</em>
<a name="839" href="#839">839</a> <em class="jxr_javadoccomment">     * Input: 00:00  Output: 00:00&lt;br /&gt;</em>
<a name="840" href="#840">840</a> <em class="jxr_javadoccomment">     * Input: 00:30  Output: 00:30&lt;br /&gt;</em>
<a name="841" href="#841">841</a> <em class="jxr_javadoccomment">     * Input: 01:00  Output: 02:00&lt;br /&gt;</em>
<a name="842" href="#842">842</a> <em class="jxr_javadoccomment">     * Input: 01:30  Output: 02:30&lt;br /&gt;</em>
<a name="843" href="#843">843</a> <em class="jxr_javadoccomment">     * Input: 02:00  Output: 02:00&lt;br /&gt;</em>
<a name="844" href="#844">844</a> <em class="jxr_javadoccomment">     * Input: 02:30  Output: 02:30&lt;br /&gt;</em>
<a name="845" href="#845">845</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="846" href="#846">846</a> <em class="jxr_javadoccomment">     * NOTE: The behaviour of this method changed in v1.5, with the emphasis</em>
<a name="847" href="#847">847</a> <em class="jxr_javadoccomment">     * on returning a consistent result later along the time-line (shown above).</em>
<a name="848" href="#848">848</a> <em class="jxr_javadoccomment">     *</em>
<a name="849" href="#849">849</a> <em class="jxr_javadoccomment">     * @param instantLocal  the millisecond instant, relative to this time zone, to</em>
<a name="850" href="#850">850</a> <em class="jxr_javadoccomment">     * get the offset for</em>
<a name="851" href="#851">851</a> <em class="jxr_javadoccomment">     * @return the millisecond offset to subtract from local time to get UTC time</em>
<a name="852" href="#852">852</a> <em class="jxr_javadoccomment">     */</em>
<a name="853" href="#853">853</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getOffsetFromLocal(<strong class="jxr_keyword">long</strong> instantLocal) {
<a name="854" href="#854">854</a>         <em class="jxr_comment">// get the offset at instantLocal (first estimate)</em>
<a name="855" href="#855">855</a>         <strong class="jxr_keyword">int</strong> offsetLocal = getOffset(instantLocal);
<a name="856" href="#856">856</a>         <em class="jxr_comment">// adjust instantLocal using the estimate and recalc the offset</em>
<a name="857" href="#857">857</a>         <strong class="jxr_keyword">int</strong> offsetAdjusted = getOffset(instantLocal - offsetLocal);
<a name="858" href="#858">858</a>         <em class="jxr_comment">// if the offsets differ, we must be near a DST boundary</em>
<a name="859" href="#859">859</a>         <strong class="jxr_keyword">if</strong> (offsetLocal != offsetAdjusted) {
<a name="860" href="#860">860</a>             <em class="jxr_comment">// we need to ensure that time is always after the DST gap</em>
<a name="861" href="#861">861</a>             <em class="jxr_comment">// this happens naturally for positive offsets, but not for negative</em>
<a name="862" href="#862">862</a>             <strong class="jxr_keyword">if</strong> ((offsetLocal - offsetAdjusted) &lt; 0) {
<a name="863" href="#863">863</a>                 <em class="jxr_comment">// if we just return offsetAdjusted then the time is pushed</em>
<a name="864" href="#864">864</a>                 <em class="jxr_comment">// back before the transition, whereas it should be</em>
<a name="865" href="#865">865</a>                 <em class="jxr_comment">// on or after the transition</em>
<a name="866" href="#866">866</a>                 <strong class="jxr_keyword">long</strong> nextLocal = nextTransition(instantLocal - offsetLocal);
<a name="867" href="#867">867</a>                 <strong class="jxr_keyword">long</strong> nextAdjusted = nextTransition(instantLocal - offsetAdjusted);
<a name="868" href="#868">868</a>                 <strong class="jxr_keyword">if</strong> (nextLocal != nextAdjusted) {
<a name="869" href="#869">869</a>                     <strong class="jxr_keyword">return</strong> offsetLocal;
<a name="870" href="#870">870</a>                 }
<a name="871" href="#871">871</a>             }
<a name="872" href="#872">872</a>         }
<a name="873" href="#873">873</a>         <strong class="jxr_keyword">return</strong> offsetAdjusted;
<a name="874" href="#874">874</a>     }
<a name="875" href="#875">875</a> 
<a name="876" href="#876">876</a>     <em class="jxr_javadoccomment">/**</em>
<a name="877" href="#877">877</a> <em class="jxr_javadoccomment">     * Converts a standard UTC instant to a local instant with the same</em>
<a name="878" href="#878">878</a> <em class="jxr_javadoccomment">     * local time. This conversion is used before performing a calculation</em>
<a name="879" href="#879">879</a> <em class="jxr_javadoccomment">     * so that the calculation can be done using a simple local zone.</em>
<a name="880" href="#880">880</a> <em class="jxr_javadoccomment">     *</em>
<a name="881" href="#881">881</a> <em class="jxr_javadoccomment">     * @param instantUTC  the UTC instant to convert to local</em>
<a name="882" href="#882">882</a> <em class="jxr_javadoccomment">     * @return the local instant with the same local time</em>
<a name="883" href="#883">883</a> <em class="jxr_javadoccomment">     * @throws ArithmeticException if the result overflows a long</em>
<a name="884" href="#884">884</a> <em class="jxr_javadoccomment">     * @since 1.5</em>
<a name="885" href="#885">885</a> <em class="jxr_javadoccomment">     */</em>
<a name="886" href="#886">886</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> convertUTCToLocal(<strong class="jxr_keyword">long</strong> instantUTC) {
<a name="887" href="#887">887</a>         <strong class="jxr_keyword">int</strong> offset = getOffset(instantUTC);
<a name="888" href="#888">888</a>         <strong class="jxr_keyword">long</strong> instantLocal = instantUTC + offset;
<a name="889" href="#889">889</a>         <em class="jxr_comment">// If there is a sign change, but the two values have the same sign...</em>
<a name="890" href="#890">890</a>         <strong class="jxr_keyword">if</strong> ((instantUTC ^ instantLocal) &lt; 0 &amp;&amp; (instantUTC ^ offset) &gt;= 0) {
<a name="891" href="#891">891</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> ArithmeticException(<span class="jxr_string">"Adding time zone offset caused overflow"</span>);
<a name="892" href="#892">892</a>         }
<a name="893" href="#893">893</a>         <strong class="jxr_keyword">return</strong> instantLocal;
<a name="894" href="#894">894</a>     }
<a name="895" href="#895">895</a> 
<a name="896" href="#896">896</a>     <em class="jxr_javadoccomment">/**</em>
<a name="897" href="#897">897</a> <em class="jxr_javadoccomment">     * Converts a local instant to a standard UTC instant with the same</em>
<a name="898" href="#898">898</a> <em class="jxr_javadoccomment">     * local time. This conversion is used after performing a calculation</em>
<a name="899" href="#899">899</a> <em class="jxr_javadoccomment">     * where the calculation was done using a simple local zone.</em>
<a name="900" href="#900">900</a> <em class="jxr_javadoccomment">     *</em>
<a name="901" href="#901">901</a> <em class="jxr_javadoccomment">     * @param instantLocal  the local instant to convert to UTC</em>
<a name="902" href="#902">902</a> <em class="jxr_javadoccomment">     * @param strict  whether the conversion should reject non-existent local times</em>
<a name="903" href="#903">903</a> <em class="jxr_javadoccomment">     * @return the UTC instant with the same local time, </em>
<a name="904" href="#904">904</a> <em class="jxr_javadoccomment">     * @throws ArithmeticException if the result overflows a long</em>
<a name="905" href="#905">905</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the zone has no eqivalent local time</em>
<a name="906" href="#906">906</a> <em class="jxr_javadoccomment">     * @since 1.5</em>
<a name="907" href="#907">907</a> <em class="jxr_javadoccomment">     */</em>
<a name="908" href="#908">908</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> convertLocalToUTC(<strong class="jxr_keyword">long</strong> instantLocal, <strong class="jxr_keyword">boolean</strong> strict) {
<a name="909" href="#909">909</a>         <em class="jxr_comment">// get the offset at instantLocal (first estimate)</em>
<a name="910" href="#910">910</a>         <strong class="jxr_keyword">int</strong> offsetLocal = getOffset(instantLocal);
<a name="911" href="#911">911</a>         <em class="jxr_comment">// adjust instantLocal using the estimate and recalc the offset</em>
<a name="912" href="#912">912</a>         <strong class="jxr_keyword">int</strong> offset = getOffset(instantLocal - offsetLocal);
<a name="913" href="#913">913</a>         <em class="jxr_comment">// if the offsets differ, we must be near a DST boundary</em>
<a name="914" href="#914">914</a>         <strong class="jxr_keyword">if</strong> (offsetLocal != offset) {
<a name="915" href="#915">915</a>             <em class="jxr_comment">// if strict then always check if in DST gap</em>
<a name="916" href="#916">916</a>             <em class="jxr_comment">// otherwise only check if zone in Western hemisphere (as the</em>
<a name="917" href="#917">917</a>             <em class="jxr_comment">// value of offset is already correct for Eastern hemisphere)</em>
<a name="918" href="#918">918</a>             <strong class="jxr_keyword">if</strong> (strict || offsetLocal &lt; 0) {
<a name="919" href="#919">919</a>                 <em class="jxr_comment">// determine if we are in the DST gap</em>
<a name="920" href="#920">920</a>                 <strong class="jxr_keyword">long</strong> nextLocal = nextTransition(instantLocal - offsetLocal);
<a name="921" href="#921">921</a>                 <strong class="jxr_keyword">long</strong> nextAdjusted = nextTransition(instantLocal - offset);
<a name="922" href="#922">922</a>                 <strong class="jxr_keyword">if</strong> (nextLocal != nextAdjusted) {
<a name="923" href="#923">923</a>                     <em class="jxr_comment">// yes we are in the DST gap</em>
<a name="924" href="#924">924</a>                     <strong class="jxr_keyword">if</strong> (strict) {
<a name="925" href="#925">925</a>                         <em class="jxr_comment">// DST gap is not acceptable</em>
<a name="926" href="#926">926</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Illegal instant due to time zone offset transition: "</span> +
<a name="927" href="#927">927</a>                                 DateTimeFormat.forPattern(<span class="jxr_string">"yyyy-MM-dd'T'HH:mm:ss.SSS"</span>).print(<strong class="jxr_keyword">new</strong> <a href="../../../org/goda/time/Instant.html">Instant</a>(instantLocal)) +
<a name="928" href="#928">928</a>                                 <span class="jxr_string">" ("</span> + getID() + <span class="jxr_string">")"</span>);
<a name="929" href="#929">929</a>                     } <strong class="jxr_keyword">else</strong> {
<a name="930" href="#930">930</a>                         <em class="jxr_comment">// DST gap is acceptable, but for the Western hemisphere</em>
<a name="931" href="#931">931</a>                         <em class="jxr_comment">// the offset is wrong and will result in local times</em>
<a name="932" href="#932">932</a>                         <em class="jxr_comment">// before the cutover so use the offsetLocal instead</em>
<a name="933" href="#933">933</a>                         offset = offsetLocal;
<a name="934" href="#934">934</a>                     }
<a name="935" href="#935">935</a>                 }
<a name="936" href="#936">936</a>             }
<a name="937" href="#937">937</a>         }
<a name="938" href="#938">938</a>         <em class="jxr_comment">// check for overflow</em>
<a name="939" href="#939">939</a>         <strong class="jxr_keyword">long</strong> instantUTC = instantLocal - offset;
<a name="940" href="#940">940</a>         <em class="jxr_comment">// If there is a sign change, but the two values have different signs...</em>
<a name="941" href="#941">941</a>         <strong class="jxr_keyword">if</strong> ((instantLocal ^ instantUTC) &lt; 0 &amp;&amp; (instantLocal ^ offset) &lt; 0) {
<a name="942" href="#942">942</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> ArithmeticException(<span class="jxr_string">"Subtracting time zone offset caused overflow"</span>);
<a name="943" href="#943">943</a>         }
<a name="944" href="#944">944</a>         <strong class="jxr_keyword">return</strong> instantUTC;
<a name="945" href="#945">945</a>     }
<a name="946" href="#946">946</a> 
<a name="947" href="#947">947</a>     <em class="jxr_javadoccomment">/**</em>
<a name="948" href="#948">948</a> <em class="jxr_javadoccomment">     * Gets the millisecond instant in another zone keeping the same local time.</em>
<a name="949" href="#949">949</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="950" href="#950">950</a> <em class="jxr_javadoccomment">     * The conversion is performed by converting the specified UTC millis to local</em>
<a name="951" href="#951">951</a> <em class="jxr_javadoccomment">     * millis in this zone, then converting back to UTC millis in the new zone.</em>
<a name="952" href="#952">952</a> <em class="jxr_javadoccomment">     *</em>
<a name="953" href="#953">953</a> <em class="jxr_javadoccomment">     * @param newZone  the new zone, null means default</em>
<a name="954" href="#954">954</a> <em class="jxr_javadoccomment">     * @param oldInstant  the UTC millisecond instant to convert</em>
<a name="955" href="#955">955</a> <em class="jxr_javadoccomment">     * @return the UTC millisecond instant with the same local time in the new zone</em>
<a name="956" href="#956">956</a> <em class="jxr_javadoccomment">     */</em>
<a name="957" href="#957">957</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getMillisKeepLocal(<a href="../../../org/goda/time/DateTimeZone.html">DateTimeZone</a> newZone, <strong class="jxr_keyword">long</strong> oldInstant) {
<a name="958" href="#958">958</a>         <strong class="jxr_keyword">if</strong> (newZone == <strong class="jxr_keyword">null</strong>) {
<a name="959" href="#959">959</a>             newZone = DateTimeZone.getDefault();
<a name="960" href="#960">960</a>         }
<a name="961" href="#961">961</a>         <strong class="jxr_keyword">if</strong> (newZone == <strong class="jxr_keyword">this</strong>) {
<a name="962" href="#962">962</a>             <strong class="jxr_keyword">return</strong> oldInstant;
<a name="963" href="#963">963</a>         }
<a name="964" href="#964">964</a>         <strong class="jxr_keyword">long</strong> instantLocal = oldInstant + getOffset(oldInstant);
<a name="965" href="#965">965</a>         <strong class="jxr_keyword">return</strong> instantLocal - newZone.getOffsetFromLocal(instantLocal);
<a name="966" href="#966">966</a>     }
<a name="967" href="#967">967</a> 
<a name="968" href="#968">968</a>     <em class="jxr_javadoccomment">/**</em>
<a name="969" href="#969">969</a> <em class="jxr_javadoccomment">     * Returns true if this time zone has no transitions.</em>
<a name="970" href="#970">970</a> <em class="jxr_javadoccomment">     *</em>
<a name="971" href="#971">971</a> <em class="jxr_javadoccomment">     * @return true if no transitions</em>
<a name="972" href="#972">972</a> <em class="jxr_javadoccomment">     */</em>
<a name="973" href="#973">973</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">boolean</strong> isFixed();
<a name="974" href="#974">974</a> 
<a name="975" href="#975">975</a>     <em class="jxr_javadoccomment">/**</em>
<a name="976" href="#976">976</a> <em class="jxr_javadoccomment">     * Advances the given instant to where the time zone offset or name changes.</em>
<a name="977" href="#977">977</a> <em class="jxr_javadoccomment">     * If the instant returned is exactly the same as passed in, then</em>
<a name="978" href="#978">978</a> <em class="jxr_javadoccomment">     * no changes occur after the given instant.</em>
<a name="979" href="#979">979</a> <em class="jxr_javadoccomment">     *</em>
<a name="980" href="#980">980</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z</em>
<a name="981" href="#981">981</a> <em class="jxr_javadoccomment">     * @return milliseconds from 1970-01-01T00:00:00Z</em>
<a name="982" href="#982">982</a> <em class="jxr_javadoccomment">     */</em>
<a name="983" href="#983">983</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">long</strong> nextTransition(<strong class="jxr_keyword">long</strong> instant);
<a name="984" href="#984">984</a> 
<a name="985" href="#985">985</a>     <em class="jxr_javadoccomment">/**</em>
<a name="986" href="#986">986</a> <em class="jxr_javadoccomment">     * Retreats the given instant to where the time zone offset or name changes.</em>
<a name="987" href="#987">987</a> <em class="jxr_javadoccomment">     * If the instant returned is exactly the same as passed in, then</em>
<a name="988" href="#988">988</a> <em class="jxr_javadoccomment">     * no changes occur before the given instant.</em>
<a name="989" href="#989">989</a> <em class="jxr_javadoccomment">     *</em>
<a name="990" href="#990">990</a> <em class="jxr_javadoccomment">     * @param instant  milliseconds from 1970-01-01T00:00:00Z</em>
<a name="991" href="#991">991</a> <em class="jxr_javadoccomment">     * @return milliseconds from 1970-01-01T00:00:00Z</em>
<a name="992" href="#992">992</a> <em class="jxr_javadoccomment">     */</em>
<a name="993" href="#993">993</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">long</strong> previousTransition(<strong class="jxr_keyword">long</strong> instant);
<a name="994" href="#994">994</a> 
<a name="995" href="#995">995</a>     <em class="jxr_comment">// Basic methods</em>
<a name="996" href="#996">996</a>     <em class="jxr_comment">//--------------------------------------------------------------------</em>
<a name="997" href="#997">997</a> 
<a name="998" href="#998">998</a>     <em class="jxr_javadoccomment">/**</em>
<a name="999" href="#999">999</a> <em class="jxr_javadoccomment">     * Get the datetime zone as a {@link java.util.TimeZone}.</em>
<a name="1000" href="#1000">1000</a> <em class="jxr_javadoccomment">     * </em>
<a name="1001" href="#1001">1001</a> <em class="jxr_javadoccomment">     * @return the closest matching TimeZone object</em>
<a name="1002" href="#1002">1002</a> <em class="jxr_javadoccomment">     */</em>
<a name="1003" href="#1003">1003</a> <em class="jxr_comment">//    public java.util.TimeZone toTimeZone() {</em>
<a name="1004" href="#1004">1004</a> <em class="jxr_comment">//        return java.util.TimeZone.getTimeZone(iID);</em>
<a name="1005" href="#1005">1005</a> <em class="jxr_comment">//    }</em>
<a name="1006" href="#1006">1006</a> 
<a name="1007" href="#1007">1007</a>     <em class="jxr_javadoccomment">/**</em>
<a name="1008" href="#1008">1008</a> <em class="jxr_javadoccomment">     * Compare this datetime zone with another.</em>
<a name="1009" href="#1009">1009</a> <em class="jxr_javadoccomment">     * </em>
<a name="1010" href="#1010">1010</a> <em class="jxr_javadoccomment">     * @param object the object to compare with</em>
<a name="1011" href="#1011">1011</a> <em class="jxr_javadoccomment">     * @return true if equal, based on the ID and all internal rules</em>
<a name="1012" href="#1012">1012</a> <em class="jxr_javadoccomment">     */</em>
<a name="1013" href="#1013">1013</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">boolean</strong> equals(Object object);
<a name="1014" href="#1014">1014</a> 
<a name="1015" href="#1015">1015</a>     <em class="jxr_javadoccomment">/**</em>
<a name="1016" href="#1016">1016</a> <em class="jxr_javadoccomment">     * Gets a hash code compatable with equals.</em>
<a name="1017" href="#1017">1017</a> <em class="jxr_javadoccomment">     * </em>
<a name="1018" href="#1018">1018</a> <em class="jxr_javadoccomment">     * @return suitable hashcode</em>
<a name="1019" href="#1019">1019</a> <em class="jxr_javadoccomment">     */</em>
<a name="1020" href="#1020">1020</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a name="1021" href="#1021">1021</a>         <strong class="jxr_keyword">return</strong> 57 + getID().hashCode();
<a name="1022" href="#1022">1022</a>     }
<a name="1023" href="#1023">1023</a> 
<a name="1024" href="#1024">1024</a>     <em class="jxr_javadoccomment">/**</em>
<a name="1025" href="#1025">1025</a> <em class="jxr_javadoccomment">     * Gets the datetime zone as a string, which is simply its ID.</em>
<a name="1026" href="#1026">1026</a> <em class="jxr_javadoccomment">     * @return the id of the zone</em>
<a name="1027" href="#1027">1027</a> <em class="jxr_javadoccomment">     */</em>
<a name="1028" href="#1028">1028</a>     <strong class="jxr_keyword">public</strong> String toString() {
<a name="1029" href="#1029">1029</a>         <strong class="jxr_keyword">return</strong> getID();
<a name="1030" href="#1030">1030</a>     }
<a name="1031" href="#1031">1031</a> 
<a name="1032" href="#1032">1032</a>     <em class="jxr_javadoccomment">/**</em>
<a name="1033" href="#1033">1033</a> <em class="jxr_javadoccomment">     * By default, when DateTimeZones are serialized, only a "stub" object</em>
<a name="1034" href="#1034">1034</a> <em class="jxr_javadoccomment">     * referring to the id is written out. When the stub is read in, it</em>
<a name="1035" href="#1035">1035</a> <em class="jxr_javadoccomment">     * replaces itself with a DateTimeZone object.</em>
<a name="1036" href="#1036">1036</a> <em class="jxr_javadoccomment">     * @return a stub object to go in the stream</em>
<a name="1037" href="#1037">1037</a> <em class="jxr_javadoccomment">     */</em>
<a name="1038" href="#1038">1038</a> <em class="jxr_comment">//    protected Object writeReplace() throws ObjectStreamException {</em>
<a name="1039" href="#1039">1039</a> <em class="jxr_comment">//        return new Stub(iID);</em>
<a name="1040" href="#1040">1040</a> <em class="jxr_comment">//    }</em>
<a name="1041" href="#1041">1041</a> 
<a name="1042" href="#1042">1042</a>     <em class="jxr_javadoccomment">/**</em>
<a name="1043" href="#1043">1043</a> <em class="jxr_javadoccomment">     * Used to serialize DateTimeZones by id.</em>
<a name="1044" href="#1044">1044</a> <em class="jxr_javadoccomment">     */</em>
<a name="1045" href="#1045">1045</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/goda/time/chrono/ISOChronology.html">Stub</a> implements Serializable {
<a name="1046" href="#1046">1046</a>         <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Serialization lock. */</em>
<a name="1047" href="#1047">1047</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = -6471952376487863581L;
<a name="1048" href="#1048">1048</a>         <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The ID of the zone. */</em>
<a name="1049" href="#1049">1049</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">transient</strong> String iID;
<a name="1050" href="#1050">1050</a> 
<a name="1051" href="#1051">1051</a>         <em class="jxr_javadoccomment">/**</em>
<a name="1052" href="#1052">1052</a> <em class="jxr_javadoccomment">         * Constructor.</em>
<a name="1053" href="#1053">1053</a> <em class="jxr_javadoccomment">         * @param id  the id of the zone</em>
<a name="1054" href="#1054">1054</a> <em class="jxr_javadoccomment">         */</em>
<a name="1055" href="#1055">1055</a>         <a href="../../../org/goda/time/chrono/ISOChronology.html">Stub</a>(String id) {
<a name="1056" href="#1056">1056</a>             iID = id;
<a name="1057" href="#1057">1057</a>         }
<a name="1058" href="#1058">1058</a> 
<a name="1059" href="#1059">1059</a> <em class="jxr_comment">//        private void writeObject(ObjectOutputStream out) throws IOException {</em>
<a name="1060" href="#1060">1060</a> <em class="jxr_comment">//            out.writeUTF(iID);</em>
<a name="1061" href="#1061">1061</a> <em class="jxr_comment">//        }</em>
<a name="1062" href="#1062">1062</a> <em class="jxr_comment">//</em>
<a name="1063" href="#1063">1063</a> <em class="jxr_comment">//        private void readObject(ObjectInputStream in) throws IOException {</em>
<a name="1064" href="#1064">1064</a> <em class="jxr_comment">//            iID = in.readUTF();</em>
<a name="1065" href="#1065">1065</a> <em class="jxr_comment">//        }</em>
<a name="1066" href="#1066">1066</a> <em class="jxr_comment">//</em>
<a name="1067" href="#1067">1067</a> <em class="jxr_comment">//        private Object readResolve() throws ObjectStreamException {</em>
<a name="1068" href="#1068">1068</a> <em class="jxr_comment">//            return forID(iID);</em>
<a name="1069" href="#1069">1069</a> <em class="jxr_comment">//        }</em>
<a name="1070" href="#1070">1070</a>     }
<a name="1071" href="#1071">1071</a> }
</pre>
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